When you insert a SIM card from different mobile operator (Carrier) into your phone, it usually asks you to enter the SIM network Unlock (PIN, Key, Me. Majority of mobile devices in the market can be unlocked with SIM network Unlock PIN Code. The above reasons may be useful for Carriers, and it is possible to qualify some of them, but this may put people who make their payments on time or who buy second-hand phones in a difficult situation. In such cases, they aim to make the phone unusable by locking it when necessary. In order to prevent this, they aim to make these phones useless by locking them to their network.Īnother reason is some malicious sellers working in their stores may show the phones to be sold on fictitious people and this will cause financial damage to the Carriers.
Losing phones in shops or during shipping is also a problem for them. In order to guarantee that they can redeem these discounts, they want their devices are used with their own services, so they aim to keep users on their own services by activating the SIM Lock for certain periods of time. These may be the discounts they offer for phones, or may be mobile plans or discounted mobile tariffs. Many Carriers offer various promotions and discounts to make their services more attractive and to encourage mobile users to use their services.
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